Relation between the Comptonization parameters Y₅₀₀, and the normalized Y_X parameter for a sub-sample of the present catalogue. Black points show clusters in the Planck-ESZ sample with XMM-Newton archival data presented by Planck Collaboration XI (2011) and additional LoCuSS clusters studied by Planck Collaboration Int. III (2013). Green points represent new Planck clusters confirmed with XMM-Newton (Planck Collaboration IX 2011; Planck Collaboration Int. I 2012; Planck Collaboration Int. IV 2013). The red line denotes the scaling relations of Planck Collaboration XI (2011). Left panel: relation in units of arcmin² where Y₅₀₀ is extracted using the Arnaud et al. (2010) pressure profile. The grey area corresponds to median Y₅₀₀ values in Y_X bins with ± σ standard deviation. Right panel: scaling relation between the intrinsic Compton parameter, , and Y_X for the sub-sample of S/N> 7 clusters used in the cosmological analysis. The data are corrected for Malmquist bias, and Y₅₀₀ is extracted using the Planck pressure profile (see text). The black line is the best-fit power-law relation.